CN105413435A - Chlorine and sulfur containing tail gas processing device and tail gas processing method thereof - Google Patents
Chlorine and sulfur containing tail gas processing device and tail gas processing method thereof Download PDFInfo
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- CN105413435A CN105413435A CN201511017683.2A CN201511017683A CN105413435A CN 105413435 A CN105413435 A CN 105413435A CN 201511017683 A CN201511017683 A CN 201511017683A CN 105413435 A CN105413435 A CN 105413435A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/202—Single element halogens
- B01D2257/2025—Chlorine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
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Abstract
The invention provides a chlorine and sulfur containing tail gas processing device and a tail gas processing method thereof. The device comprises a heat exchanger, an absorbing tower, a gas-liquid separator, and an adsorption tower; wherein the heat exchanger, absorbing tower, gas-liquid separator, and adsorption tower are communicated in the air passage. The upper section of the absorbing tower adopts a water circulation treatment mode, and a circulating water pump is used to increase the pressure. The lower second of the absorbing tower adopts an alkali liquid circulation treatment mode, the pressure of alkali liquid is increased by a pump, then alkali liquid is pumped into an alkali liquid heater and is heated by the alkali liquid heater; and finally the alkali liquid is introduced to the lower section of the absorbing tower and is cyclically used. The device can recover the thermal energy of tail gas through the heat exchanger; at the same time, the high temperature tail gas, which contains high concentration corrosive mediums such as hydrogen chloride, sulfur dioxide, chlorine gas, and the like, is effectively processed through alkali liquid absorption; and the processed tail gas can reach the emission standards.
Description
Technical field
The present invention relates to petroleum chemical industry tail gas disposal technique field, sulphur exhaust gas processing device chloride in particular to one and exhaust gas treating method thereof.
Background technology
High-temperature roasting is the critical process that many refining and petrochemical processing units carry out catalyst regeneration, wherein injects corrosive gas for needing in roasting process, is used for improving the activity of catalyst, but then becomes the key of clean environment firendly technology containing the process of corrosive gas tail gas.
Simple alkali absorption method processing cost is higher, often only little for exhausted air quantity, the situation that the content of chloride and sulfide is lower, usually connects with WATER-WASHING METHOD and uses, be usually used in non high temperature vent gas treatment.If the higher method only using absorption of the content of chloride and sulfide, absorbent large usage quantity, operation energy consumption are higher.
At present, the device that can either utilize exhaust heat-energy preferably, qualified discharge can be realized again is not also had for chloride, high-temperature tail gas process that sulfide content is higher.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is to provide a kind of chloride, sulphur exhaust gas processing device, described chloride, that sulphur exhaust gas processing device has structure is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, make the tail gas after processing can reach environment protection emission requirement, adopt air and high-temperature tail gas heat exchange to reclaim the advantages such as the heat energy of this part simultaneously.
The second object of the present invention is to provide a kind of described chloride, sulphur exhaust gas processing device to carry out the method for vent gas treatment, the method technique is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, make the tail gas after processing can reach environment protection emission requirement, adopt air and high-temperature tail gas heat exchange to reclaim the heat energy of this part simultaneously.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of chloride, sulphur exhaust gas processing device, described chloride, sulphur exhaust gas processing device comprises heat exchanger, absorption tower, gas-liquid separator, adsorption tower, water circulating pump, circulation alkali liquid pump and alkali lye heater; Wherein said heat exchanger, absorption tower, gas-liquid separator are connected in turn with adsorption tower; Described water circulating pump is connected with top with in the middle part of absorption tower respectively, forms closed circuit; Described circulation alkali liquid pump is connected with bottom absorption tower, and alkali lye heater is connected with in the middle part of absorption tower, and circulation alkali liquid pump is connected with alkali lye heater, forms closed circuit.
The invention provides a kind of chloride, sulphur exhaust gas processing device, comprise heat exchanger, absorption tower, gas-liquid separator, adsorption tower be connected successively in gas circuit.Absorption tower epimere adopts water circulation processing mode, uses water circulating pump supercharging; Absorption tower hypomere adopts alkali lye circular treatment, and alkali lye enters the heating of alkali lye heater after being boosted by pump, after deliver to absorption tower hypomere and recycle.The present invention is chloride, sulphur exhaust gas processing device reclaims heat energy in tail gas by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Preferably, described heat exchanger is connected with bottom, absorption tower, and top, described absorption tower is connected with in the middle part of gas-liquid separator, and described gas-liquid separator top is connected with bottom adsorption tower.
Described heat exchanger is preferably double pipe heat exchanger.Double pipe heat exchanger to be formed by connecting concentric circles sleeve pipe with the standard pipe that two kinds of sizes are different, outside be shell side, inner is tube side.Two kinds of different mediums can reverse flow in shell side and tube side (or in the same way) to reach the effect of heat exchange.Double pipe heat exchanger has the following advantages:
1. structure is simple, and heat transfer area increase and decrease freely.Because it is combined by standard element, without the need to other processing during installation.
2. heat conductive efficiency is high.It is a kind of pure adverse current type heat exchanger, and can also choose suitable sectional dimension, to improve fluid velocity, increase the heat transfer coefficient of two side liquids, therefore its heat-transfer effect is good simultaneously.During liquid-liquid heat exchange, heat transfer coefficient is 870 ~ 1750W/ (m2 DEG C).This point is particularly suitable for the heat exchange of high pressure, low discharge, low heat transfer coefficient fluid.The shortcoming of double pipe heat exchanger is that floor space is large; Unit heat transfer area metal consumption is many, is about 5 times of shell-and-tube heat exchanger; Pipe joint is many, easily leaks; Flow resistance is large.
3. structure is simple, work accommodation scope is large, heat transfer area increase and decrease is convenient, two side liquids all can improve flow velocity, make the both sides of heat-transfer area can have higher heat transfer coefficient, are that the metal wastage of unit heat-transfer area is large, for increasing heat transfer area, improving heat-transfer effect, various forms of fin can be added at outer wall of inner tube, and add knifing disturbance device in interior pipe, to adapt to the heat exchange of high viscosity fluid.
4. can change form arbitrarily according to installation site, be beneficial to installation.
Double pipe heat exchanger of the present invention, tube side medium can be regeneration off gases, and tube side can select Inconel600 material, and shell side medium can be air, and shell side can select TP304 material; The helical angle of preferred weld spiral stream guidance band in tube side, preferred weld longitudinal fin in shell side.Double pipe heat exchanger shell side of the present invention adopts air as cold medium, and after heat exchange, air themperature raises, and this part heat energy can reclaim, and also can flow to that the present invention is chloride, other energy-consuming parts in sulphur exhaust gas processing device utilizes.
Described absorption tower is packed tower, preferably arranges two sections of packing section in described absorption tower, and further, described absorption tower is divided into two sections, arranges a packing section in every section respectively.Described filler is preferably graphite Raschig ring filler; Absorption tower epimere adopts water circulation processing mode, uses water circulating pump supercharging; Absorption tower hypomere adopts alkali lye circular treatment, and alkali lye enters the heating of alkali lye heater after being boosted by pump, after deliver to absorption tower hypomere and recycle.
Arrange seal pot in the middle part of described absorption tower, described seal pot is connected with water circulating pump with alkali lye heater respectively.
Top, described absorption tower arranges spray equipment, and described spray equipment is connected with water circulating pump.Adopt the mode of top spray, convection current can be produced with the gas in absorption tower, acid tail gas and the abundant haptoreaction of akaline liquid, improve assimilation effect.
In described gas-liquid separator, wire mesh demister is set.Wire mesh demister is a gas-liquid separation device, and gas, can except the mist of deentrainment by the silk pad of demister.The supporting arrangement that wire mesh demister mainly forms silk screen block and fixing silk screen block by silk screen, silk screen grid is formed, and silk screen is the gas-liquid filter net of various material, and gas-liquid filter net is made up of wire or nonmetal wire.The nonmetal wire of gas-liquid filter net is formed by multiply non-metallic fibers twisting, also can be sub-thread nonmetal wire.This wire mesh demister not only filtering can be suspended in larger liquid foam in air-flow, and can the less and minute liquid foam of filtering, is widely used in the gas-liquid separation device in the industries such as chemical industry, oil, tower manufacture, pressure vessel.Wire mesh demister of the present invention is preferably arranged on gas-liquid separator top, preferably adopts macromolecule material wire mesh demister.
Be connected with fluid collection device bottom described gas-liquid separator, for collecting the alkali lye that may be entrained with.
Arrange adsorbent in described adsorption tower, gas through adsorption bed, finally reaches the discharge standard meeting national requirements from the bottom to top.
Adopt above-mentioned a kind of chloride, sulphur exhaust gas processing device to carry out the method for vent gas treatment, comprise the steps:
Enter absorption tower, the alkali lye counter current contacting sprayed with tower top after chloride, sulphur tail gas heat exchange, the sour gas in tail gas and alkaline reaction generate salt, are down at the bottom of tower, deliver to tower top circulation through water circulating pump; Alkali lye at the bottom of tower is delivered in the middle part of tower through circulation alkali liquid pump and alkali lye heater and is circulated; After tower top purification, tail gas delivers to gas-liquid separation device, is separated the alkali lye that may carry secretly; Then isolated gas enter adsorption tower.
Exhaust gas treating method technique of the present invention is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, the heat energy in tail gas is reclaimed by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Described chloride, sulphur tail gas is preferably in propane or butane dehydrogenation device, and continuous catalyst regenerating burns the waste gas of rear generation.
Compared with prior art, beneficial effect of the present invention is:
The invention provides a kind of chloride, sulphur exhaust gas processing device, comprise heat exchanger, absorption tower, gas-liquid separator, adsorption tower be connected successively in gas circuit.Absorption tower epimere adopts water circulation processing mode, uses water circulating pump supercharging; Absorption tower hypomere adopts alkali lye circular treatment, and alkali lye enters the heating of alkali lye heater after being boosted by pump, after deliver to absorption tower hypomere and recycle.The present invention is chloride, sulphur exhaust gas processing device reclaims heat energy in tail gas by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.Exhaust gas treating method technique of the present invention is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, the heat energy in tail gas is reclaimed by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is apparatus of the present invention structural representation;
Reference numeral:
1-heat exchanger; 2-absorption tower; 3-gas-liquid separator;
4-adsorption tower; 5-water circulating pump; 6-circulation alkali liquid pump;
7-alkali lye heater.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is clearly and completely described, but it will be understood to those of skill in the art that, following described embodiment is the present invention's part embodiment, instead of whole embodiments, only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturer suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1, the invention provides a kind of chloride, sulphur exhaust gas processing device, described chloride, sulphur exhaust gas processing device comprises heat exchanger 1, absorption tower 2, gas-liquid separator 3, adsorption tower 4, water circulating pump 5, circulation alkali liquid pump 6 and alkali lye heater 7; Wherein said heat exchanger 1, absorption tower 2, gas-liquid separator 3 are connected in turn with adsorption tower 4; Described water circulating pump 5 is connected with top respectively with in the middle part of absorption tower 2, forms closed circuit; Described circulation alkali liquid pump 6 is connected with bottom absorption tower 2, and alkali lye heater 7 is connected with in the middle part of absorption tower 2, and circulation alkali liquid pump 6 is connected with alkali lye heater 7, forms closed circuit.
The invention provides a kind of chloride, sulphur exhaust gas processing device, comprise heat exchanger 1, absorption tower 2, gas-liquid separator 3, adsorption tower 4 be connected successively in gas circuit.Absorption tower 2 epimere adopts water circulation processing mode, uses water circulating pump 5 supercharging; Absorption tower 2 hypomere adopts alkali lye circular treatment, and alkali lye is entered alkali lye heater 7 and heats after being boosted by pump, after deliver to absorption tower 2 hypomere and recycle.The present invention is chloride, sulphur exhaust gas processing device reclaims heat energy in tail gas by heat exchanger 1, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Preferably, described heat exchanger 1 is connected with bottom, absorption tower 2, and top, described absorption tower 2 is connected with in the middle part of gas-liquid separator 3, and described gas-liquid separator 3 top is connected with bottom adsorption tower 4.
Described heat exchanger 1 is preferably double pipe heat exchanger 1.Double pipe heat exchanger to be formed by connecting concentric circles sleeve pipe with the standard pipe that two kinds of sizes are different, outside be shell side, inner is tube side.Two kinds of different mediums can reverse flow in shell side and tube side (or in the same way) to reach the effect of heat exchange.Double pipe heat exchanger has the following advantages:
1. structure is simple, and heat transfer area increase and decrease freely.Because it is combined by standard element, without the need to other processing during installation.
2. heat conductive efficiency is high.It is a kind of pure adverse current type heat exchanger, and can also choose suitable sectional dimension, to improve fluid velocity, increase the heat transfer coefficient of two side liquids, therefore its heat-transfer effect is good simultaneously.During liquid-liquid heat exchange, heat transfer coefficient is 870 ~ 1750W/ (m2 DEG C).This point is particularly suitable for the heat exchange of high pressure, low discharge, low heat transfer coefficient fluid.The shortcoming of double pipe heat exchanger is that floor space is large; Unit heat transfer area metal consumption is many, is about 5 times of shell-and-tube heat exchanger; Pipe joint is many, easily leaks; Flow resistance is large.
3. structure is simple, work accommodation scope is large, heat transfer area increase and decrease is convenient, two side liquids all can improve flow velocity, make the both sides of heat-transfer area can have higher heat transfer coefficient, are that the metal wastage of unit heat-transfer area is large, for increasing heat transfer area, improving heat-transfer effect, various forms of fin can be added at outer wall of inner tube, and add knifing disturbance device in interior pipe, to adapt to the heat exchange of high viscosity fluid.
4. can change form arbitrarily according to installation site, be beneficial to installation.
Double pipe heat exchanger 1 of the present invention, tube side medium can be regeneration off gases, and tube side can select Inconel600 material, and shell side medium can be air, and shell side can select TP304 material; The helical angle of preferred weld spiral stream guidance band in tube side, preferred weld longitudinal fin in shell side.Double pipe heat exchanger 1 shell side of the present invention adopts air as cold medium, and after heat exchange, air themperature raises, and this part heat energy can reclaim, and also can flow to that the present invention is chloride, other energy-consuming parts in sulphur exhaust gas processing device utilizes.
Described absorption tower 2 is packed tower, preferably arranges two sections of packing section in described absorption tower 2, and further, described absorption tower 2 is divided into two sections, arranges a packing section in every section respectively.Described filler is preferably graphite Raschig ring filler; Absorption tower 2 epimere adopts water circulation processing mode, uses water circulating pump 5 supercharging; Absorption tower 2 hypomere adopts alkali lye circular treatment, and alkali lye is entered alkali lye heater 7 and heats after being boosted by pump, after deliver to absorption tower 2 hypomere and recycle.
Arrange seal pot in the middle part of described absorption tower 2, described seal pot is connected with water circulating pump 5 with alkali lye heater 7 respectively.
Top, described absorption tower 2 arranges spray equipment, and described spray equipment is connected with water circulating pump 5.Adopt the mode of top spray, convection current can be produced with the gas in absorption tower 2, acid tail gas and the abundant haptoreaction of akaline liquid, improve assimilation effect.
In described gas-liquid separator 3, wire mesh demister is set.Wire mesh demister is a gas-liquid separation device, and gas, can except the mist of deentrainment by the silk pad of demister.The supporting arrangement that wire mesh demister mainly forms silk screen block and fixing silk screen block by silk screen, silk screen grid is formed, and silk screen is the gas-liquid filter net of various material, and gas-liquid filter net is made up of wire or nonmetal wire.The nonmetal wire of gas-liquid filter net is formed by multiply non-metallic fibers twisting, also can be sub-thread nonmetal wire.This wire mesh demister not only filtering can be suspended in larger liquid foam in air-flow, and can the less and minute liquid foam of filtering, is widely used in the gas-liquid separation device in the industries such as chemical industry, oil, tower manufacture, pressure vessel.Wire mesh demister of the present invention is preferably arranged on gas-liquid separator 3 top, preferably adopts macromolecule material wire mesh demister.
Be connected with fluid collection device bottom described gas-liquid separator 3, for collecting the alkali lye that may be entrained with.
Arrange adsorbent in described adsorption tower 4, gas through adsorption bed, finally reaches the discharge standard meeting national requirements from the bottom to top.
Adopt above-mentioned a kind of chloride, sulphur exhaust gas processing device to carry out the method for vent gas treatment, comprise the steps:
Enter absorption tower 2, the alkali lye counter current contacting sprayed with tower top after chloride, sulphur tail gas heat exchange, the sour gas in tail gas and alkaline reaction generate salt, are down at the bottom of tower, deliver to tower top circulation through water circulating pump 5; Alkali lye at the bottom of tower is delivered in the middle part of tower through circulation alkali liquid pump 6 and alkali lye heater 7 and is circulated; After tower top purification, tail gas delivers to gas-liquid separation device, is separated the alkali lye that may carry secretly; Then isolated gas enter adsorption tower 4.
Exhaust gas treating method technique of the present invention is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, the heat energy in tail gas is reclaimed by heat exchanger 1, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Described chloride, sulphur tail gas is preferably in propane or butane dehydrogenation device, and continuous catalyst regenerating burns the waste gas of rear generation.
Embodiment 1
Adopt one as shown in Figure 1 chloride, sulphur exhaust gas processing device carries out vent gas treatment, described chloride, sulphur tail gas is in propane or butane dehydrogenation device, continuous catalyst regenerating burns the waste gas of rear generation, wherein hydrogen chloride content is 0.3vol%, content of sulfur dioxide is 0.026vol%, chlorine content is 0.05vol%, chloride, absorption tower 2 is entered after the heat exchange of sulphur tail gas, alkali lye (mass fraction is the NaOH aqueous solution of the 10%) counter current contacting sprayed with tower top, sour gas in tail gas and alkaline reaction generate salt, be down at the bottom of tower, tower top circulation is delivered to through water circulating pump 5, alkali lye at the bottom of tower is delivered in the middle part of tower through circulation alkali liquid pump 6 and alkali lye heater 7 and is circulated, after tower top purification, tail gas delivers to gas-liquid separation device, is separated the alkali lye that may carry secretly, then isolated gas enter adsorption tower 4 (adsorbent is ZSM-5 molecular sieve adsorbent), tail gas after adsorption tower 4 adsorbs is discharged by adsorption tower 4 tower top, and after testing, hydrogen chloride content≤1ppm, content of sulfur dioxide≤1ppm in the gas that adsorption tower 4 is discharged, chlorine content is≤1ppm.
The invention provides a kind of chloride, sulphur exhaust gas processing device, comprise heat exchanger, absorption tower, gas-liquid separator, adsorption tower be connected successively in gas circuit.Absorption tower epimere adopts water circulation processing mode, uses water circulating pump supercharging; Absorption tower hypomere adopts alkali lye circular treatment, and alkali lye enters the heating of alkali lye heater after being boosted by pump, after deliver to absorption tower hypomere and recycle.The present invention is chloride, sulphur exhaust gas processing device reclaims heat energy in tail gas by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.Exhaust gas treating method technique of the present invention is simple, effectively can process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine, the heat energy in tail gas is reclaimed by heat exchanger, and effectively process the high-temperature tail gas containing Korrosionsmediums such as high concentration hydrogen chloride, sulfur dioxide, chlorine by the mode of alkali liquor absorption, make the tail gas after processing can reach environment protection emission requirement.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. chloride, a sulphur exhaust gas processing device, is characterized in that, described chloride, sulphur exhaust gas processing device comprises heat exchanger, absorption tower, gas-liquid separator, adsorption tower, water circulating pump, circulation alkali liquid pump and alkali lye heater; Wherein said heat exchanger, absorption tower, gas-liquid separator are connected in turn with adsorption tower; Described water circulating pump is connected with top with in the middle part of absorption tower respectively, forms closed circuit; Described circulation alkali liquid pump is connected with bottom absorption tower, and alkali lye heater is connected with in the middle part of absorption tower, and circulation alkali liquid pump is connected with alkali lye heater, forms closed circuit.
2. chloride, the sulphur exhaust gas processing device of one according to claim 1, it is characterized in that, described heat exchanger is connected with bottom, absorption tower, and top, described absorption tower is connected with in the middle part of gas-liquid separator, and described gas-liquid separator top is connected with bottom adsorption tower.
3. chloride, the sulphur exhaust gas processing device of one according to claim 1, it is characterized in that, described heat exchanger is double pipe heat exchanger.
4. chloride, the sulphur exhaust gas processing device of one according to claim 1, it is characterized in that, described absorption tower is packed tower, preferably arranges two sections of packing section in described absorption tower.
5. chloride, the sulphur exhaust gas processing device of one according to claim 1, it is characterized in that, arrange seal pot in the middle part of described absorption tower, described seal pot is connected with water circulating pump with alkali lye heater respectively.
6. chloride, the sulphur exhaust gas processing device of one according to claim 1, it is characterized in that, top, described absorption tower arranges spray equipment, and described spray equipment is connected with water circulating pump.
7. chloride, the sulphur exhaust gas processing device of one according to claim 1, is characterized in that, arrange wire mesh demister in described gas-liquid separator.
8. chloride, the sulphur exhaust gas processing device of one according to claim 1, is characterized in that, be connected bottom described gas-liquid separator with fluid collection device.
9. chloride, the sulphur exhaust gas processing device of one according to claim 1, is characterized in that, arrange adsorbent in described adsorption tower.
10. adopt claim 1-9 arbitrary described a kind of chloride, sulphur exhaust gas processing device to carry out the method for vent gas treatment, it is characterized in that, comprise the steps:
Enter absorption tower, the alkali lye counter current contacting sprayed with tower top after chloride, sulphur tail gas heat exchange, the sour gas in tail gas and alkaline reaction generate salt, are down at the bottom of tower, deliver to tower top circulation through water circulating pump; Alkali lye at the bottom of tower is delivered in the middle part of tower through circulation alkali liquid pump and alkali lye heater and is circulated; After tower top purification, tail gas delivers to gas-liquid separation device, is separated the alkali lye that may carry secretly; Then isolated gas enter adsorption tower.
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| CN201511017683.2A CN105413435A (en) | 2015-12-29 | 2015-12-29 | Chlorine and sulfur containing tail gas processing device and tail gas processing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178906A (en) * | 2016-09-23 | 2016-12-07 | 杭州东日节能技术有限公司 | Sulfur-containing tail gas dedusting and chlorine fluorine removing process device |
| CN106914097A (en) * | 2017-03-17 | 2017-07-04 | 烟台国邦化工机械科技有限公司 | One kind is reclaimed and contains SO2, HCl tail gas apparatus and method |
| CN112082899A (en) * | 2020-09-29 | 2020-12-15 | 西仪服(郑州)科技有限公司 | Absorption and desorption experimental device |
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| CN1597060A (en) * | 2003-09-17 | 2005-03-23 | 镇江市江南环保设备研究所 | Method of separating and recovering sulfur dioxide in smoke using ammonia method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106178906A (en) * | 2016-09-23 | 2016-12-07 | 杭州东日节能技术有限公司 | Sulfur-containing tail gas dedusting and chlorine fluorine removing process device |
| CN106914097A (en) * | 2017-03-17 | 2017-07-04 | 烟台国邦化工机械科技有限公司 | One kind is reclaimed and contains SO2, HCl tail gas apparatus and method |
| CN106914097B (en) * | 2017-03-17 | 2023-09-05 | 烟台国邦化工机械科技有限公司 | Recovering SO-containing material 2 Device and method for HCl tail gas |
| CN112082899A (en) * | 2020-09-29 | 2020-12-15 | 西仪服(郑州)科技有限公司 | Absorption and desorption experimental device |
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